Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725603h&link_type=abstract
American Astronomical Society, AAS Meeting #217, #256.03; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
High velocity jets are common features of the transition from Asymptotic Giant Branch stars to planetary nebulae (PNe), but their origins are not well understood. A promising scenario is that jets are launched by the accretion disks of companion stars, which are fed by mass loss from the primary during the pre-PN phase. We examine this scenario using prescriptions for the mass fraction captured by the companion and the efficiency of jet launching from disks. We explore the dependence of jet properties on the mass loss and binary parameters, and compare the results with measurements of jet momentum and toroidal mass in a sample of well studied pre-PNe. Our findings are used to evaluate and constrain the companion-disk scenario. This work is supported in part by NSF grant AST 08-06910.
Cheung C. L.
Huggins Patrick J.
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